put the knife in
US /pʊt ðə naɪf ɪn/
UK /pʊt ðə naɪf ɪn/
成语
背后捅刀子, 雪上加霜
to betray someone or cause them great emotional pain, especially by saying or doing something hurtful at a vulnerable moment
示例:
•
After all I've done for him, he really put the knife in by spreading those rumors.
在我为他做了这么多之后，他散布那些谣言真是在我背后捅刀子。
•
Her cruel comment really put the knife in when I was already feeling down.
当我心情已经很低落的时候，她那刻薄的评论真是雪上加霜。